The lung cancer is a disease of excessive product dividing cells that make up the lung tissue, ie it is a conglomeration of malignant cells from the lungs; The diagnosis of this disease is mostly delayed by different factors, the first is that it occurs with an asymptomatic period (without the appearance of symptoms) which culminates when the malignant tumor is already in an advanced stage making its treatment difficult, in the rare occasions where lung cancer has symptoms from its initial stage, the symptoms are confused with other diseases such as lower respiratory infections (pneumonia) or if we are talking about a habitual smoker, the symptoms they are confused with the long-term effects of tobacco use.
The most common symptoms are a dry cough, sometimes with blood or phlegm, chest pain that worsens with deep breathing, tiredness or fatigue with daily activities, weight loss as well as loss of appetite, recurrent respiratory infections due to immunosuppression that these patients have such as pneumonia or bronchitis that are almost impossible to cure, and wheezing when conducting auscultation in the patient; At the hospital level, a study was carried out to be able to make a diagnosis of this pathology when the tumor is microcytic (small in size), which showed that the cancerof the lung can be diagnosed early with the use of a specialized tomography called "chest computed tomography" this is a type of imaging study in which the thoracic structures can be seen more clearly and allows to detect the formation of tumors at weather.
Among the most common causes of lung cancer are: tobacco as the main responsible for this pathology since it is composed of carcinogenic substances that, when inhaled by both smokers and non-smokers, remain available to the lung tissue, we can also mention Genetic predisposition, when we classify that the lung cancer developed is due to hereditary problems, it means that the patient has mutations in the DNA of the lung cells, which generate excessive growth in the tissue; In the same way, the inhibitory cells of oncogenes may be mutated, these being altered will not be able to fulfill their function, which is to prevent or inhibit the exaggerated growth of lung tissue, other causes that can be mentioned are the consumption of marijuana, air pollution that inhaled, recurrent infection inflammation in the respiratory tract, etc.
